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ECAT Physics Work and Energy Test Online

Maan AliLast Updated: May 26, 2025

Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

Total Questions:	65
Time Allowed:	40 Minutes
Total Marks:	65
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Physics Work and Energy Test Online

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Page 1 of 3

Physics

1. The relation between horse power and watt is

1 hp = 546 watts

1 hp = 746 watts

1 hp = 946 watts

1 hp = 1000 watts

2. The initial velocity with which a body projected upward and never comes back is called

Terminal velocity

Escape velocity

None of these

Kinetic energy

3. If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body ___________.

Increases

Decreases

Becomes zero

Remains the same

4. A man pushes a wall but fails to displace it. He does:

Negative work

Maximum positive work

No work

Positive work but

5. The work done by the body is maximum when it has angle

90°

30°

60°

0°

6. A body of mass 10 kg is dropped to the ground from a height of 10 meters. The work done by from a height of 10 meters. The done by the gravitational force is (g = 9.8m/s²)

- 490 Joules

+ 980 Joules

+ 490 Joules

- 980 Joules

7. A boat moving at constant speed v through still water experiences a total frictional drag F. What is the power developed by the boat?

0.5Fv²

Fv²

0.5Fv

8. A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the gravitational force?

400 J

Zero

-400 J

50 J

9. A container with a mass of 5 kg is lifted to a height of 8 m. How much work is done by the external force?

-400 J

400 J

50 J

Zero

10. The dimension of power is

[M²LT¯³]

[MLT]

[ML²T³]

[ML²T¯²]

11. Work done is a gravitational field along a closed loop is

Minimum

Maximum

Zero

12. Kilowatt-hour commercially used to measure the consumption of

Energy produced in nuclear plants

None of these

Power of petrol engine

Electrical Energy

13. A coolie carries a load of 500 N to a distance of 100 m. The work done by him is

5 N

50,000 Nm

1/5 N

14. Approximate power of a car moving at a speed of 90 kmh¯¹ in watts

1.3 x 10⁷

1 x 10⁵

1.4 x 10⁸

1.2 x 10⁶

15. The Escape velocity of Earth in Kms¯¹

11.2

9.75

12.3

15.6

16. The original source of hydroelectric is

Sun

Water

Wind

Moon

17. Approximate power of colour T.V in watt is

120

130

100

18. A solar cell converts sun’s energy into:

Sound

Electric energy

Heat energy

Light

19. Which form of energy does the flowing water possess?

Gravitational energy

Electrical energy

Kinetic energy

Potential energy

20. A truck driver is typing to push a loaded truck with an applied force. Unfortunately, his attempt was unsuccessful the truck stays stationary no matter how hard the driver pushes. How much work is done by the driver?

Zero

-Fd

F/d

21. One Kilowatt hour is equal

3.5 x 10⁵ J

3.6 x 10⁶ J

306 x 10⁵ J

3.5 x 10⁶ J

22. The field, in which is the work done is independent of the path followed, is called

Non-conservative field

None of these

Conservative fields

Varying intensity field

23. The Escape velocity of Saturn in Kms¯¹

35.04

37.4

30.0

37.0

24. Which of the following is not a perfectly inelastic collision?

A man jumping onto a moving cart

Striking of two glass balls

An electron captured by a proton

A bullet striking a bag of sand

25. If it is assumed that a frictional force f is present, during the downward motion of an object of mass, which of the following relation is true.

2mg – f = ½ mV²

mgh – f = ½ mV²

None of these

Page 2 of 3

26. The K.E of a light and a heavy object is same. Which object has maximum momentum?

Light object

Data is not sufficient

Both have the same momentum

Heavy object

27. If a body falls from a height, the relation between its kinetic and potential energies is:

Loss in P.E = Gain in K.E. – Work done against friction

Gain in K.E = Loss in P.E. – Work done against friction

Gain in P.E = Loss in K.E. + Work done against friction

Loss in K.E = Gain in P.E. + Work done against friction

28. Geothermal energy with in the earth is generated by

Radio active decay

Compression of material

All

Residual heat of the earth

29. A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point is (g = 10 m/s²)

50 J

500 J

60 J

600 J

30. When a force is parallel to the direction of motion of the body. Then work done on the body is

Zero

Infinity

Maximum

Minimum

31. A 1 kg mass has a kinetic energy of 1 joule when its speed is

1.4 m/s

1 m/s

4.4 m/s

0.45 m/s

32. The value of the escape velocity on the surface of the earth is:

1100 m sec¯¹

11 x 10⁸ m sec¯¹

11 m sec¯¹

1100 m sec¯¹

33. The original source of geothermal energy is

Fossil fuels

Biomass

Moon

Earth

34. An elevator weighing 3.5 x 10–6 N is raised to a height of 1000 m in the absence of friction, the work done is

3.5 x 10⁹ J

3.5 x 10³ J

3.5 x 10⁴ J

3.5 x 10⁶ J

35. The original source of biomass energy is

None of these

Moon

Sun

Geothermal

36. A machine does 2500 J of work in 1 min. What is the power developed by the machine?

2500 W

42 W

150 W

21 W

37. Reason of weightlessness in a satellite is

Center of mass

Zero reaction force by satellite surface

Zero gravity

None of these

38. The work done is a gravitational field is independent of:

Its path

Its mass

Its potential energy

Its distance

39. A bullet is shot from a rifle. As a result the rifle recoils. The kinetic energy of rifle as compared to that of bullet is

Less

Equal

Cannot be concluded

Greater

40. The atmosphere is held to the earth by

Gravity

The rotation of earth

Clouds

Winds

41. Power is a measure of the

Force which produces motion

Rate of change of momentum

Rate of change of energy

Change of energy

42. Work is defined as the dot product of force and displacement but it is a

Vector quantity

Scalar quantity

Constant quantity

None of these

43. The average power and instantaneous power become equal if work is done at:

At uniform rate

At variable rate

At high rate

Any rate

44. The unit of power is

Joule

Kilojoule

Watt per second

Joule per second

45. An average energy used by the car from petrol in its life time

1 x 10⁹ J

1 x 10¹² J

1 x 10¹⁰ J

1 x 10¹¹ J

46. The escape velocity of moon in Kms¯¹ is

2.40

2.43

1.23

2.59

47. Approximate power of flash light in watts (2 cells)

1.5

1.56

1.55

1.2 moon m

48. The moon produce the tides raise the water in the se roughly

Several a day

None of these

Twice a day

Once a day

49. Which of the following is conservative field?

All of these

Viscous field

Frictional field

Electrostatic field

50. Name the physical quantity which is equal to the product of force and velocity.

Acceleration

Energy

Work

Power

Page 3 of 3

51. The type of energy possessed by a simple pendulum, when it is at the mean position is

Potential energy

Potential energy + kinetic energy

Kinetic energy

Sound energy

52. The P.E. of a body at a certain height is 200 J. The kinetic energy possessed by it when it just touches the surface of the earth is:

< P.E.

= P.E.

> P.E.

Cannot be known

53. A spacecraft moves around Earth in a circular orbit with a constant radius. How much work is done by the gravitational force on the spacecraft during one revolution?

-FGd

mgh

Zero

FGd

54. If a body a mass of 2 kg is raised vertically through 2m, then the work done will be

392.1 J

38.2 J

3.92 J

39.2 J

55. A meteor of mass m enters the Earth’s atmosphere at an angle θ to the horizontal with an initial velocity v. Which of the following is true about vertical component of its velocity?

None

It increases throughout the motion

It remains constant throughout the motion.

It decreases throughout the motion.

56. All the food you eat in one day has the energy equivalent to petrol of

1/8 liter

1/6 liter

¼ liter

1/5 liter

57. For the same velocity, the momentum is maximum for:

An a particle

A proton

A deuteron

An electron

58. Two objects of masses 1 x 10¯³ kg and 4 x 10¯³ kg have equal momentum. What is the ratio of their kinetic energies?

2:1

16:1

4:1

19:1

59. If the force applied is F and the velocity gained is v, then the power developed is

Fv²

F/v

v/F

60. The Escape velocity of Mars in Kms¯¹

5.00

2.89

3.99

5.23

61. A body of mass 2 kg is dropped from a height of 1m. Its kinetic energy as it touches the ground is

19.6 J

19.6 N

19.6 kg

19.6 m

62. SI unit of work is

N – ms¯¹

N – MS¯²

N – m²

N – m

63. The original source of tidal energy is

Sun

Tides

Waves

Moon

64. Which of the following is true?

Momentum is conserved in all collisions but not kinetic energy

Neither momentum nor kinetic energy is conserved in inelastic collisions

Both momentum and kinetic energy are conserved in all collisions

Momentum is conserved in all collisions but kinetic energy is conserved only in inelastic collisions

65. The work done in taking a particle from the floor to a table depends on

The height of the table

The speed of the particle

The actual path taken

The tie taken in this work

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Maan AliLast Updated: May 26, 2025

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11 Comments

faran says:

July 25, 2021 at 6:09 pm

centripetal force ailso donot work

Azhar saeed shaheen says:

August 7, 2017 at 5:18 pm

100%

Azhar saeed shaheen says:

August 7, 2017 at 4:45 pm

i am not agree with the answer of q no 10 and pls any one tell me the lojic of q no 14 it will so kind of u dear friend

waqar says:

June 10, 2017 at 8:56 pm

It’s a good site for Entry test preparation.

umair ahmed says:

March 18, 2017 at 1:46 am

i also

1. Azhar saeed shaheen says:
  
  August 7, 2017 at 4:47 pm
  
  i also
  
Umair Yaseen says:

March 15, 2017 at 3:02 pm

is that correct???????

1. umair ahmed says:
  
  March 18, 2017 at 1:47 am
  
  yes bro
  
2. Azhar saeed shaheen says:
  
  August 7, 2017 at 4:46 pm
  
  i think its not correct
  
Haseeb Butt says:

September 16, 2016 at 2:17 am

Kilowatt hour is unit of electrical energy and yup centripetal force does no work

Usman Laghari says:

July 31, 2016 at 9:10 pm

80% at first attempt

ECAT Physics Work and Energy Test Online

Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

ECAT Physics Work and Energy Test Online

Physics

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Maan Ali

11 Comments

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Physics Work and Energy MCQS Online Test

ECAT Physics Work and Energy Chapter Online Test

ECAT Physics Work and Energy Test Online

Physics

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